Casing-joining device



l July 7, 1925. l

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R. C. MASON CASING JOINING DEVICE Filed Nov. 10, 1924 HTTUM'EY PatentedJuly 7, 1925.

PATENT OFFIQE.

l:R101-IARD C. MASON, 0F TULSA, OKLAHOMA.

CASING-J O'IN ING DEVICE.

Application led November 107 1924. Serial No. 749,091.

To all whom it may concern.'

Be it known that I, RICHARD C. MASON, a citizen of the United States,residing at Tulsa, in the county of Tulsa and State of Oklahoma, haveinvented certain new and useful Improvements in Casing-Joining Devices;and I do declare the following to be afull, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and to the gures of reference marked thereon,which form a part of this specification.

This invention relates to a casing joining device and the primary objectthereof'is to provide a novel form of casing joining device which may beused for screwing sections of oil Well casin one to the other and theinvention is applicable for use in unscrewing the sections.

Another important feature of the invention is to provide means whereby aconventional prime mover may be used in a convenient way for providingthe necessary power and for the purpose of illustration I have shown theprime mover as an ordinary standard motor vehicle engine on account ofthe relatively low cost of the prime' mover, facility with which it maybe in-v stalled and its ease of operation, although I do not wish to belimited in all cases to the use of this particular type of motor.

The novel features of my invention will be apparent by reference to thefollowing description in connection with the accompanying drawings, inwhich Fig. 1 is a perspective view of a casing joining device'constructed in jaecordance with my invention.

Fig. 2. is a fragmentary section through the turn table, through theringygear connected thereto and the pinion in mesh with the ring gear,and

Fig. 3 is a fragmentary disassociated view of one of the casing clampingjaws and one of the slips therefor.

. Referring now to the drawings by numerals of reference, 1 designatesthe usual spider supported from ythe sills 2 and 3. The. spider maycarry the usual slips t to hold the casing 5 so that a new casingsection 6 can be screwed thereinto. Ah of this is old construction.

My invention contemplates an easily portable casing joining device andit is illustrated as comprising two sills 7 and 8 connected together byappropriate means and the sills may consist of Lbeams. Supported by thesills 7 and 8 is a prime mover 9 shown as a motor vehicle engine. Thistype of prime mover is recommended on account 0f it being inexpensiveand readily adapted for this particular invention.

The casing can be turned by mechanism which in so far as I know is novelin this particular art. rIhe turning mechanism operated from the primemover consists of a turn table 10.. havinga central opening 11 throughwhich the casing may extend.

.Therefore the turn table is in the form of a ring and itv carries pairsof upstanding links. The links are designated 12' and 13 for one pairand 14 and 15 for the other pair. The links are pivoted to the turntable and they are pivotally secured to the jaw members 16 and 17,respectively. Each j aw member is provided with an under cut groove 18`to receive a dove-tailed rib 19 on' a slip 20, the slip preferablyhaving a roughened face 21 to enga-ge the casing. The pairs of jawmembers are connected by cross links 22 and 23. The links 22 and 23 areshown as carried by the pivot 24 for the jaw 17 and they have slottedends 25 which engage o-ver the pivots 26 for the jaw 16-as clearly shownin Fig. 1.

Clamping Screws 27 and 28 are provided for each jaw member to` force theslips into gripping contact with the casing. The slips are slidable inthe jaw members so that as the casing is screwed down, the slips mayfollow with it in the aws. The turn table is provided with an annulargroove 29 to receive an annular guide rib 30 on the base ring 31 whichcarries ears 32 by means of which the base ring may be fastened to theI-beams 7 and 8.

The periphery of the turn table is provided with a shoulder 33 toreceive the ring' gear 34 which may be .slipped over the periphery ofthe turn table and itmay be fastened thereto by screws 35 which engagerecesses in the ring gear and in the turn table so as to hold the turntable and ring gear rigidly one to the other.

The teethv 36 of the ring gear mesh with the teeth of a pinion 37 on thedrive shaft 38 of the prime mover 9. Therefore when the rod shaft isturned the turn table will ring gear.

ears 32 mayk be removed and the turn table may be slipped away from thepinion 37 so that the ring gear 34 can be removed. After reversal theturn table can be moved back into position to mesh the pinion with theIt will be apparent that the entire casing joining device may be easilytransported and placed in position to screw on the casing sections, oneafter the other or it may be used for unscrewing them in case the casingis being pulledl It will also be apparent that the device is simple,rugged and easily operated and while I have specifically described theexact details of construction, I do'not wish to be limited to theprecise construction shown as changes may suggest themselves from timeto time which will not depart from the actual spirit of the invention.

What I claim and desire to secure by Letters-Patent is 1. A casingjoining device comprising a turn table, links pivoted to the turn table,jaw members supported by pairs of links, and slips carried by the jawmembers for engagement with oil well casing sections,

said slips having free longitudinal movement 1n the jaw members.

2. A casing jolnmg device comprising a turn table, links pivoted to theturn table, jaw members supported by pairs of links, and slips carriedby the jaw members for engagement with oil well casing sections, saidslips having free longitudinal movement in the jaw members, and linkmembers connecting one pair of links to the links of a complementarypair.

3. A casing joining devi comprising a turn table having a centralopening through which oil well tubing may extend, links pivoted to theturn table and arranged in pairs at diametrically opposite points on theturn table, a/j aw member carried by each pair of links, each jaw memberhaving a longitudi nal guide groove casing engaging slips carried by thejaw members and guided into grooves, set vscrews carried by the jawmembers for forcing the slips into engagement tying the pairs of firstnamed links together to thereby hold the slips in contact with thecasing.

4. A casing joining device comprising a turn table, means on the turntable for engaging oil'well casing, a ring gear carried by the turntable and having laterally extending teeth, the 'ring gear beingreversible, means for fastening the ring gear to the turn tableincluding a pinion in mesh with the teeth thereof.

5. In a casing joining device, sills, a prime mover carried by thesills, a turn table rotatably supported on the sills, a reversible ringgear carried by the table, a pinion driven by the prime mover inposition to mesh with the teeth of the ring gear in either of itspositions and a casing engaging means carried by the turn table.

In testimony whereof I atlix my signature.

RICHARD C. MASON.

-with the casing and supplemental links for

